Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

Linux/drivers/media/usb/gspca/ov534.c

  1 /*
  2  * ov534-ov7xxx gspca driver
  3  *
  4  * Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
  5  * Copyright (C) 2008 Jim Paris <jim@jtan.com>
  6  * Copyright (C) 2009 Jean-Francois Moine http://moinejf.free.fr
  7  *
  8  * Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
  9  * USB protocol reverse engineered by Jim Paris <jim@jtan.com>
 10  * https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
 11  *
 12  * PS3 Eye camera enhanced by Richard Kaswy http://kaswy.free.fr
 13  * PS3 Eye camera - brightness, contrast, awb, agc, aec controls
 14  *                  added by Max Thrun <bear24rw@gmail.com>
 15  * PS3 Eye camera - FPS range extended by Joseph Howse
 16  *                  <josephhowse@nummist.com> http://nummist.com
 17  *
 18  * This program is free software; you can redistribute it and/or modify
 19  * it under the terms of the GNU General Public License as published by
 20  * the Free Software Foundation; either version 2 of the License, or
 21  * any later version.
 22  *
 23  * This program is distributed in the hope that it will be useful,
 24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 26  * GNU General Public License for more details.
 27  *
 28  * You should have received a copy of the GNU General Public License
 29  * along with this program; if not, write to the Free Software
 30  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 31  */
 32 
 33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 34 
 35 #define MODULE_NAME "ov534"
 36 
 37 #include "gspca.h"
 38 
 39 #include <linux/fixp-arith.h>
 40 #include <media/v4l2-ctrls.h>
 41 
 42 #define OV534_REG_ADDRESS       0xf1    /* sensor address */
 43 #define OV534_REG_SUBADDR       0xf2
 44 #define OV534_REG_WRITE         0xf3
 45 #define OV534_REG_READ          0xf4
 46 #define OV534_REG_OPERATION     0xf5
 47 #define OV534_REG_STATUS        0xf6
 48 
 49 #define OV534_OP_WRITE_3        0x37
 50 #define OV534_OP_WRITE_2        0x33
 51 #define OV534_OP_READ_2         0xf9
 52 
 53 #define CTRL_TIMEOUT 500
 54 
 55 MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
 56 MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
 57 MODULE_LICENSE("GPL");
 58 
 59 /* specific webcam descriptor */
 60 struct sd {
 61         struct gspca_dev gspca_dev;     /* !! must be the first item */
 62 
 63         struct v4l2_ctrl_handler ctrl_handler;
 64         struct v4l2_ctrl *hue;
 65         struct v4l2_ctrl *saturation;
 66         struct v4l2_ctrl *brightness;
 67         struct v4l2_ctrl *contrast;
 68         struct { /* gain control cluster */
 69                 struct v4l2_ctrl *autogain;
 70                 struct v4l2_ctrl *gain;
 71         };
 72         struct v4l2_ctrl *autowhitebalance;
 73         struct { /* exposure control cluster */
 74                 struct v4l2_ctrl *autoexposure;
 75                 struct v4l2_ctrl *exposure;
 76         };
 77         struct v4l2_ctrl *sharpness;
 78         struct v4l2_ctrl *hflip;
 79         struct v4l2_ctrl *vflip;
 80         struct v4l2_ctrl *plfreq;
 81 
 82         __u32 last_pts;
 83         u16 last_fid;
 84         u8 frame_rate;
 85 
 86         u8 sensor;
 87 };
 88 enum sensors {
 89         SENSOR_OV767x,
 90         SENSOR_OV772x,
 91         NSENSORS
 92 };
 93 
 94 static int sd_start(struct gspca_dev *gspca_dev);
 95 static void sd_stopN(struct gspca_dev *gspca_dev);
 96 
 97 
 98 static const struct v4l2_pix_format ov772x_mode[] = {
 99         {320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
100          .bytesperline = 320 * 2,
101          .sizeimage = 320 * 240 * 2,
102          .colorspace = V4L2_COLORSPACE_SRGB,
103          .priv = 1},
104         {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
105          .bytesperline = 640 * 2,
106          .sizeimage = 640 * 480 * 2,
107          .colorspace = V4L2_COLORSPACE_SRGB,
108          .priv = 0},
109 };
110 static const struct v4l2_pix_format ov767x_mode[] = {
111         {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
112                 .bytesperline = 320,
113                 .sizeimage = 320 * 240 * 3 / 8 + 590,
114                 .colorspace = V4L2_COLORSPACE_JPEG},
115         {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
116                 .bytesperline = 640,
117                 .sizeimage = 640 * 480 * 3 / 8 + 590,
118                 .colorspace = V4L2_COLORSPACE_JPEG},
119 };
120 
121 static const u8 qvga_rates[] = {187, 150, 137, 125, 100, 75, 60, 50, 37, 30};
122 static const u8 vga_rates[] = {60, 50, 40, 30, 15};
123 
124 static const struct framerates ov772x_framerates[] = {
125         { /* 320x240 */
126                 .rates = qvga_rates,
127                 .nrates = ARRAY_SIZE(qvga_rates),
128         },
129         { /* 640x480 */
130                 .rates = vga_rates,
131                 .nrates = ARRAY_SIZE(vga_rates),
132         },
133 };
134 
135 struct reg_array {
136         const u8 (*val)[2];
137         int len;
138 };
139 
140 static const u8 bridge_init_767x[][2] = {
141 /* comments from the ms-win file apollo7670.set */
142 /* str1 */
143         {0xf1, 0x42},
144         {0x88, 0xf8},
145         {0x89, 0xff},
146         {0x76, 0x03},
147         {0x92, 0x03},
148         {0x95, 0x10},
149         {0xe2, 0x00},
150         {0xe7, 0x3e},
151         {0x8d, 0x1c},
152         {0x8e, 0x00},
153         {0x8f, 0x00},
154         {0x1f, 0x00},
155         {0xc3, 0xf9},
156         {0x89, 0xff},
157         {0x88, 0xf8},
158         {0x76, 0x03},
159         {0x92, 0x01},
160         {0x93, 0x18},
161         {0x1c, 0x00},
162         {0x1d, 0x48},
163         {0x1d, 0x00},
164         {0x1d, 0xff},
165         {0x1d, 0x02},
166         {0x1d, 0x58},
167         {0x1d, 0x00},
168         {0x1c, 0x0a},
169         {0x1d, 0x0a},
170         {0x1d, 0x0e},
171         {0xc0, 0x50},   /* HSize 640 */
172         {0xc1, 0x3c},   /* VSize 480 */
173         {0x34, 0x05},   /* enable Audio Suspend mode */
174         {0xc2, 0x0c},   /* Input YUV */
175         {0xc3, 0xf9},   /* enable PRE */
176         {0x34, 0x05},   /* enable Audio Suspend mode */
177         {0xe7, 0x2e},   /* this solves failure of "SuspendResumeTest" */
178         {0x31, 0xf9},   /* enable 1.8V Suspend */
179         {0x35, 0x02},   /* turn on JPEG */
180         {0xd9, 0x10},
181         {0x25, 0x42},   /* GPIO[8]:Input */
182         {0x94, 0x11},   /* If the default setting is loaded when
183                          * system boots up, this flag is closed here */
184 };
185 static const u8 sensor_init_767x[][2] = {
186         {0x12, 0x80},
187         {0x11, 0x03},
188         {0x3a, 0x04},
189         {0x12, 0x00},
190         {0x17, 0x13},
191         {0x18, 0x01},
192         {0x32, 0xb6},
193         {0x19, 0x02},
194         {0x1a, 0x7a},
195         {0x03, 0x0a},
196         {0x0c, 0x00},
197         {0x3e, 0x00},
198         {0x70, 0x3a},
199         {0x71, 0x35},
200         {0x72, 0x11},
201         {0x73, 0xf0},
202         {0xa2, 0x02},
203         {0x7a, 0x2a},   /* set Gamma=1.6 below */
204         {0x7b, 0x12},
205         {0x7c, 0x1d},
206         {0x7d, 0x2d},
207         {0x7e, 0x45},
208         {0x7f, 0x50},
209         {0x80, 0x59},
210         {0x81, 0x62},
211         {0x82, 0x6b},
212         {0x83, 0x73},
213         {0x84, 0x7b},
214         {0x85, 0x8a},
215         {0x86, 0x98},
216         {0x87, 0xb2},
217         {0x88, 0xca},
218         {0x89, 0xe0},
219         {0x13, 0xe0},
220         {0x00, 0x00},
221         {0x10, 0x00},
222         {0x0d, 0x40},
223         {0x14, 0x38},   /* gain max 16x */
224         {0xa5, 0x05},
225         {0xab, 0x07},
226         {0x24, 0x95},
227         {0x25, 0x33},
228         {0x26, 0xe3},
229         {0x9f, 0x78},
230         {0xa0, 0x68},
231         {0xa1, 0x03},
232         {0xa6, 0xd8},
233         {0xa7, 0xd8},
234         {0xa8, 0xf0},
235         {0xa9, 0x90},
236         {0xaa, 0x94},
237         {0x13, 0xe5},
238         {0x0e, 0x61},
239         {0x0f, 0x4b},
240         {0x16, 0x02},
241         {0x21, 0x02},
242         {0x22, 0x91},
243         {0x29, 0x07},
244         {0x33, 0x0b},
245         {0x35, 0x0b},
246         {0x37, 0x1d},
247         {0x38, 0x71},
248         {0x39, 0x2a},
249         {0x3c, 0x78},
250         {0x4d, 0x40},
251         {0x4e, 0x20},
252         {0x69, 0x00},
253         {0x6b, 0x4a},
254         {0x74, 0x10},
255         {0x8d, 0x4f},
256         {0x8e, 0x00},
257         {0x8f, 0x00},
258         {0x90, 0x00},
259         {0x91, 0x00},
260         {0x96, 0x00},
261         {0x9a, 0x80},
262         {0xb0, 0x84},
263         {0xb1, 0x0c},
264         {0xb2, 0x0e},
265         {0xb3, 0x82},
266         {0xb8, 0x0a},
267         {0x43, 0x0a},
268         {0x44, 0xf0},
269         {0x45, 0x34},
270         {0x46, 0x58},
271         {0x47, 0x28},
272         {0x48, 0x3a},
273         {0x59, 0x88},
274         {0x5a, 0x88},
275         {0x5b, 0x44},
276         {0x5c, 0x67},
277         {0x5d, 0x49},
278         {0x5e, 0x0e},
279         {0x6c, 0x0a},
280         {0x6d, 0x55},
281         {0x6e, 0x11},
282         {0x6f, 0x9f},
283         {0x6a, 0x40},
284         {0x01, 0x40},
285         {0x02, 0x40},
286         {0x13, 0xe7},
287         {0x4f, 0x80},
288         {0x50, 0x80},
289         {0x51, 0x00},
290         {0x52, 0x22},
291         {0x53, 0x5e},
292         {0x54, 0x80},
293         {0x58, 0x9e},
294         {0x41, 0x08},
295         {0x3f, 0x00},
296         {0x75, 0x04},
297         {0x76, 0xe1},
298         {0x4c, 0x00},
299         {0x77, 0x01},
300         {0x3d, 0xc2},
301         {0x4b, 0x09},
302         {0xc9, 0x60},
303         {0x41, 0x38},   /* jfm: auto sharpness + auto de-noise  */
304         {0x56, 0x40},
305         {0x34, 0x11},
306         {0x3b, 0xc2},
307         {0xa4, 0x8a},   /* Night mode trigger point */
308         {0x96, 0x00},
309         {0x97, 0x30},
310         {0x98, 0x20},
311         {0x99, 0x20},
312         {0x9a, 0x84},
313         {0x9b, 0x29},
314         {0x9c, 0x03},
315         {0x9d, 0x4c},
316         {0x9e, 0x3f},
317         {0x78, 0x04},
318         {0x79, 0x01},
319         {0xc8, 0xf0},
320         {0x79, 0x0f},
321         {0xc8, 0x00},
322         {0x79, 0x10},
323         {0xc8, 0x7e},
324         {0x79, 0x0a},
325         {0xc8, 0x80},
326         {0x79, 0x0b},
327         {0xc8, 0x01},
328         {0x79, 0x0c},
329         {0xc8, 0x0f},
330         {0x79, 0x0d},
331         {0xc8, 0x20},
332         {0x79, 0x09},
333         {0xc8, 0x80},
334         {0x79, 0x02},
335         {0xc8, 0xc0},
336         {0x79, 0x03},
337         {0xc8, 0x20},
338         {0x79, 0x26},
339 };
340 static const u8 bridge_start_vga_767x[][2] = {
341 /* str59 JPG */
342         {0x94, 0xaa},
343         {0xf1, 0x42},
344         {0xe5, 0x04},
345         {0xc0, 0x50},
346         {0xc1, 0x3c},
347         {0xc2, 0x0c},
348         {0x35, 0x02},   /* turn on JPEG */
349         {0xd9, 0x10},
350         {0xda, 0x00},   /* for higher clock rate(30fps) */
351         {0x34, 0x05},   /* enable Audio Suspend mode */
352         {0xc3, 0xf9},   /* enable PRE */
353         {0x8c, 0x00},   /* CIF VSize LSB[2:0] */
354         {0x8d, 0x1c},   /* output YUV */
355 /*      {0x34, 0x05},    * enable Audio Suspend mode (?) */
356         {0x50, 0x00},   /* H/V divider=0 */
357         {0x51, 0xa0},   /* input H=640/4 */
358         {0x52, 0x3c},   /* input V=480/4 */
359         {0x53, 0x00},   /* offset X=0 */
360         {0x54, 0x00},   /* offset Y=0 */
361         {0x55, 0x00},   /* H/V size[8]=0 */
362         {0x57, 0x00},   /* H-size[9]=0 */
363         {0x5c, 0x00},   /* output size[9:8]=0 */
364         {0x5a, 0xa0},   /* output H=640/4 */
365         {0x5b, 0x78},   /* output V=480/4 */
366         {0x1c, 0x0a},
367         {0x1d, 0x0a},
368         {0x94, 0x11},
369 };
370 static const u8 sensor_start_vga_767x[][2] = {
371         {0x11, 0x01},
372         {0x1e, 0x04},
373         {0x19, 0x02},
374         {0x1a, 0x7a},
375 };
376 static const u8 bridge_start_qvga_767x[][2] = {
377 /* str86 JPG */
378         {0x94, 0xaa},
379         {0xf1, 0x42},
380         {0xe5, 0x04},
381         {0xc0, 0x80},
382         {0xc1, 0x60},
383         {0xc2, 0x0c},
384         {0x35, 0x02},   /* turn on JPEG */
385         {0xd9, 0x10},
386         {0xc0, 0x50},   /* CIF HSize 640 */
387         {0xc1, 0x3c},   /* CIF VSize 480 */
388         {0x8c, 0x00},   /* CIF VSize LSB[2:0] */
389         {0x8d, 0x1c},   /* output YUV */
390         {0x34, 0x05},   /* enable Audio Suspend mode */
391         {0xc2, 0x4c},   /* output YUV and Enable DCW */
392         {0xc3, 0xf9},   /* enable PRE */
393         {0x1c, 0x00},   /* indirect addressing */
394         {0x1d, 0x48},   /* output YUV422 */
395         {0x50, 0x89},   /* H/V divider=/2; plus DCW AVG */
396         {0x51, 0xa0},   /* DCW input H=640/4 */
397         {0x52, 0x78},   /* DCW input V=480/4 */
398         {0x53, 0x00},   /* offset X=0 */
399         {0x54, 0x00},   /* offset Y=0 */
400         {0x55, 0x00},   /* H/V size[8]=0 */
401         {0x57, 0x00},   /* H-size[9]=0 */
402         {0x5c, 0x00},   /* DCW output size[9:8]=0 */
403         {0x5a, 0x50},   /* DCW output H=320/4 */
404         {0x5b, 0x3c},   /* DCW output V=240/4 */
405         {0x1c, 0x0a},
406         {0x1d, 0x0a},
407         {0x94, 0x11},
408 };
409 static const u8 sensor_start_qvga_767x[][2] = {
410         {0x11, 0x01},
411         {0x1e, 0x04},
412         {0x19, 0x02},
413         {0x1a, 0x7a},
414 };
415 
416 static const u8 bridge_init_772x[][2] = {
417         { 0xc2, 0x0c },
418         { 0x88, 0xf8 },
419         { 0xc3, 0x69 },
420         { 0x89, 0xff },
421         { 0x76, 0x03 },
422         { 0x92, 0x01 },
423         { 0x93, 0x18 },
424         { 0x94, 0x10 },
425         { 0x95, 0x10 },
426         { 0xe2, 0x00 },
427         { 0xe7, 0x3e },
428 
429         { 0x96, 0x00 },
430 
431         { 0x97, 0x20 },
432         { 0x97, 0x20 },
433         { 0x97, 0x20 },
434         { 0x97, 0x0a },
435         { 0x97, 0x3f },
436         { 0x97, 0x4a },
437         { 0x97, 0x20 },
438         { 0x97, 0x15 },
439         { 0x97, 0x0b },
440 
441         { 0x8e, 0x40 },
442         { 0x1f, 0x81 },
443         { 0x34, 0x05 },
444         { 0xe3, 0x04 },
445         { 0x88, 0x00 },
446         { 0x89, 0x00 },
447         { 0x76, 0x00 },
448         { 0xe7, 0x2e },
449         { 0x31, 0xf9 },
450         { 0x25, 0x42 },
451         { 0x21, 0xf0 },
452 
453         { 0x1c, 0x00 },
454         { 0x1d, 0x40 },
455         { 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
456         { 0x1d, 0x00 }, /* payload size */
457 
458         { 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
459         { 0x1d, 0x58 }, /* frame size */
460         { 0x1d, 0x00 }, /* frame size */
461 
462         { 0x1c, 0x0a },
463         { 0x1d, 0x08 }, /* turn on UVC header */
464         { 0x1d, 0x0e }, /* .. */
465 
466         { 0x8d, 0x1c },
467         { 0x8e, 0x80 },
468         { 0xe5, 0x04 },
469 
470         { 0xc0, 0x50 },
471         { 0xc1, 0x3c },
472         { 0xc2, 0x0c },
473 };
474 static const u8 sensor_init_772x[][2] = {
475         { 0x12, 0x80 },
476         { 0x11, 0x01 },
477 /*fixme: better have a delay?*/
478         { 0x11, 0x01 },
479         { 0x11, 0x01 },
480         { 0x11, 0x01 },
481         { 0x11, 0x01 },
482         { 0x11, 0x01 },
483         { 0x11, 0x01 },
484         { 0x11, 0x01 },
485         { 0x11, 0x01 },
486         { 0x11, 0x01 },
487         { 0x11, 0x01 },
488 
489         { 0x3d, 0x03 },
490         { 0x17, 0x26 },
491         { 0x18, 0xa0 },
492         { 0x19, 0x07 },
493         { 0x1a, 0xf0 },
494         { 0x32, 0x00 },
495         { 0x29, 0xa0 },
496         { 0x2c, 0xf0 },
497         { 0x65, 0x20 },
498         { 0x11, 0x01 },
499         { 0x42, 0x7f },
500         { 0x63, 0xaa },         /* AWB - was e0 */
501         { 0x64, 0xff },
502         { 0x66, 0x00 },
503         { 0x13, 0xf0 },         /* com8 */
504         { 0x0d, 0x41 },
505         { 0x0f, 0xc5 },
506         { 0x14, 0x11 },
507 
508         { 0x22, 0x7f },
509         { 0x23, 0x03 },
510         { 0x24, 0x40 },
511         { 0x25, 0x30 },
512         { 0x26, 0xa1 },
513         { 0x2a, 0x00 },
514         { 0x2b, 0x00 },
515         { 0x6b, 0xaa },
516         { 0x13, 0xff },         /* AWB */
517 
518         { 0x90, 0x05 },
519         { 0x91, 0x01 },
520         { 0x92, 0x03 },
521         { 0x93, 0x00 },
522         { 0x94, 0x60 },
523         { 0x95, 0x3c },
524         { 0x96, 0x24 },
525         { 0x97, 0x1e },
526         { 0x98, 0x62 },
527         { 0x99, 0x80 },
528         { 0x9a, 0x1e },
529         { 0x9b, 0x08 },
530         { 0x9c, 0x20 },
531         { 0x9e, 0x81 },
532 
533         { 0xa6, 0x07 },
534         { 0x7e, 0x0c },
535         { 0x7f, 0x16 },
536         { 0x80, 0x2a },
537         { 0x81, 0x4e },
538         { 0x82, 0x61 },
539         { 0x83, 0x6f },
540         { 0x84, 0x7b },
541         { 0x85, 0x86 },
542         { 0x86, 0x8e },
543         { 0x87, 0x97 },
544         { 0x88, 0xa4 },
545         { 0x89, 0xaf },
546         { 0x8a, 0xc5 },
547         { 0x8b, 0xd7 },
548         { 0x8c, 0xe8 },
549         { 0x8d, 0x20 },
550 
551         { 0x0c, 0x90 },
552 
553         { 0x2b, 0x00 },
554         { 0x22, 0x7f },
555         { 0x23, 0x03 },
556         { 0x11, 0x01 },
557         { 0x0c, 0xd0 },
558         { 0x64, 0xff },
559         { 0x0d, 0x41 },
560 
561         { 0x14, 0x41 },
562         { 0x0e, 0xcd },
563         { 0xac, 0xbf },
564         { 0x8e, 0x00 },         /* De-noise threshold */
565         { 0x0c, 0xd0 }
566 };
567 static const u8 bridge_start_vga_772x[][2] = {
568         {0x1c, 0x00},
569         {0x1d, 0x40},
570         {0x1d, 0x02},
571         {0x1d, 0x00},
572         {0x1d, 0x02},
573         {0x1d, 0x58},
574         {0x1d, 0x00},
575         {0xc0, 0x50},
576         {0xc1, 0x3c},
577 };
578 static const u8 sensor_start_vga_772x[][2] = {
579         {0x12, 0x00},
580         {0x17, 0x26},
581         {0x18, 0xa0},
582         {0x19, 0x07},
583         {0x1a, 0xf0},
584         {0x29, 0xa0},
585         {0x2c, 0xf0},
586         {0x65, 0x20},
587 };
588 static const u8 bridge_start_qvga_772x[][2] = {
589         {0x1c, 0x00},
590         {0x1d, 0x40},
591         {0x1d, 0x02},
592         {0x1d, 0x00},
593         {0x1d, 0x01},
594         {0x1d, 0x4b},
595         {0x1d, 0x00},
596         {0xc0, 0x28},
597         {0xc1, 0x1e},
598 };
599 static const u8 sensor_start_qvga_772x[][2] = {
600         {0x12, 0x40},
601         {0x17, 0x3f},
602         {0x18, 0x50},
603         {0x19, 0x03},
604         {0x1a, 0x78},
605         {0x29, 0x50},
606         {0x2c, 0x78},
607         {0x65, 0x2f},
608 };
609 
610 static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
611 {
612         struct usb_device *udev = gspca_dev->dev;
613         int ret;
614 
615         if (gspca_dev->usb_err < 0)
616                 return;
617 
618         PDEBUG(D_USBO, "SET 01 0000 %04x %02x", reg, val);
619         gspca_dev->usb_buf[0] = val;
620         ret = usb_control_msg(udev,
621                               usb_sndctrlpipe(udev, 0),
622                               0x01,
623                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
624                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
625         if (ret < 0) {
626                 pr_err("write failed %d\n", ret);
627                 gspca_dev->usb_err = ret;
628         }
629 }
630 
631 static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
632 {
633         struct usb_device *udev = gspca_dev->dev;
634         int ret;
635 
636         if (gspca_dev->usb_err < 0)
637                 return 0;
638         ret = usb_control_msg(udev,
639                               usb_rcvctrlpipe(udev, 0),
640                               0x01,
641                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
642                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
643         PDEBUG(D_USBI, "GET 01 0000 %04x %02x", reg, gspca_dev->usb_buf[0]);
644         if (ret < 0) {
645                 pr_err("read failed %d\n", ret);
646                 gspca_dev->usb_err = ret;
647         }
648         return gspca_dev->usb_buf[0];
649 }
650 
651 /* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
652  * (direction and output)? */
653 static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
654 {
655         u8 data;
656 
657         PDEBUG(D_CONF, "led status: %d", status);
658 
659         data = ov534_reg_read(gspca_dev, 0x21);
660         data |= 0x80;
661         ov534_reg_write(gspca_dev, 0x21, data);
662 
663         data = ov534_reg_read(gspca_dev, 0x23);
664         if (status)
665                 data |= 0x80;
666         else
667                 data &= ~0x80;
668 
669         ov534_reg_write(gspca_dev, 0x23, data);
670 
671         if (!status) {
672                 data = ov534_reg_read(gspca_dev, 0x21);
673                 data &= ~0x80;
674                 ov534_reg_write(gspca_dev, 0x21, data);
675         }
676 }
677 
678 static int sccb_check_status(struct gspca_dev *gspca_dev)
679 {
680         u8 data;
681         int i;
682 
683         for (i = 0; i < 5; i++) {
684                 msleep(10);
685                 data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
686 
687                 switch (data) {
688                 case 0x00:
689                         return 1;
690                 case 0x04:
691                         return 0;
692                 case 0x03:
693                         break;
694                 default:
695                         PERR("sccb status 0x%02x, attempt %d/5",
696                                data, i + 1);
697                 }
698         }
699         return 0;
700 }
701 
702 static void sccb_reg_write(struct gspca_dev *gspca_dev, u8 reg, u8 val)
703 {
704         PDEBUG(D_USBO, "sccb write: %02x %02x", reg, val);
705         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
706         ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
707         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
708 
709         if (!sccb_check_status(gspca_dev)) {
710                 pr_err("sccb_reg_write failed\n");
711                 gspca_dev->usb_err = -EIO;
712         }
713 }
714 
715 static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
716 {
717         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
718         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
719         if (!sccb_check_status(gspca_dev))
720                 pr_err("sccb_reg_read failed 1\n");
721 
722         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
723         if (!sccb_check_status(gspca_dev))
724                 pr_err("sccb_reg_read failed 2\n");
725 
726         return ov534_reg_read(gspca_dev, OV534_REG_READ);
727 }
728 
729 /* output a bridge sequence (reg - val) */
730 static void reg_w_array(struct gspca_dev *gspca_dev,
731                         const u8 (*data)[2], int len)
732 {
733         while (--len >= 0) {
734                 ov534_reg_write(gspca_dev, (*data)[0], (*data)[1]);
735                 data++;
736         }
737 }
738 
739 /* output a sensor sequence (reg - val) */
740 static void sccb_w_array(struct gspca_dev *gspca_dev,
741                         const u8 (*data)[2], int len)
742 {
743         while (--len >= 0) {
744                 if ((*data)[0] != 0xff) {
745                         sccb_reg_write(gspca_dev, (*data)[0], (*data)[1]);
746                 } else {
747                         sccb_reg_read(gspca_dev, (*data)[1]);
748                         sccb_reg_write(gspca_dev, 0xff, 0x00);
749                 }
750                 data++;
751         }
752 }
753 
754 /* ov772x specific controls */
755 static void set_frame_rate(struct gspca_dev *gspca_dev)
756 {
757         struct sd *sd = (struct sd *) gspca_dev;
758         int i;
759         struct rate_s {
760                 u8 fps;
761                 u8 r11;
762                 u8 r0d;
763                 u8 re5;
764         };
765         const struct rate_s *r;
766         static const struct rate_s rate_0[] = { /* 640x480 */
767                 {60, 0x01, 0xc1, 0x04},
768                 {50, 0x01, 0x41, 0x02},
769                 {40, 0x02, 0xc1, 0x04},
770                 {30, 0x04, 0x81, 0x02},
771                 {15, 0x03, 0x41, 0x04},
772         };
773         static const struct rate_s rate_1[] = { /* 320x240 */
774 /*              {205, 0x01, 0xc1, 0x02},  * 205 FPS: video is partly corrupt */
775                 {187, 0x01, 0x81, 0x02}, /* 187 FPS or below: video is valid */
776                 {150, 0x01, 0xc1, 0x04},
777                 {137, 0x02, 0xc1, 0x02},
778                 {125, 0x02, 0x81, 0x02},
779                 {100, 0x02, 0xc1, 0x04},
780                 {75, 0x03, 0xc1, 0x04},
781                 {60, 0x04, 0xc1, 0x04},
782                 {50, 0x02, 0x41, 0x04},
783                 {37, 0x03, 0x41, 0x04},
784                 {30, 0x04, 0x41, 0x04},
785         };
786 
787         if (sd->sensor != SENSOR_OV772x)
788                 return;
789         if (gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv == 0) {
790                 r = rate_0;
791                 i = ARRAY_SIZE(rate_0);
792         } else {
793                 r = rate_1;
794                 i = ARRAY_SIZE(rate_1);
795         }
796         while (--i > 0) {
797                 if (sd->frame_rate >= r->fps)
798                         break;
799                 r++;
800         }
801 
802         sccb_reg_write(gspca_dev, 0x11, r->r11);
803         sccb_reg_write(gspca_dev, 0x0d, r->r0d);
804         ov534_reg_write(gspca_dev, 0xe5, r->re5);
805 
806         PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
807 }
808 
809 static void sethue(struct gspca_dev *gspca_dev, s32 val)
810 {
811         struct sd *sd = (struct sd *) gspca_dev;
812 
813         if (sd->sensor == SENSOR_OV767x) {
814                 /* TBD */
815         } else {
816                 s16 huesin;
817                 s16 huecos;
818 
819                 /* fixp_sin and fixp_cos accept only positive values, while
820                  * our val is between -90 and 90
821                  */
822                 val += 360;
823 
824                 /* According to the datasheet the registers expect HUESIN and
825                  * HUECOS to be the result of the trigonometric functions,
826                  * scaled by 0x80.
827                  *
828                  * The 0x100 here represents the maximun absolute value
829                  * returned byt fixp_sin and fixp_cos, so the scaling will
830                  * consider the result like in the interval [-1.0, 1.0].
831                  */
832                 huesin = fixp_sin(val) * 0x80 / 0x100;
833                 huecos = fixp_cos(val) * 0x80 / 0x100;
834 
835                 if (huesin < 0) {
836                         sccb_reg_write(gspca_dev, 0xab,
837                                 sccb_reg_read(gspca_dev, 0xab) | 0x2);
838                         huesin = -huesin;
839                 } else {
840                         sccb_reg_write(gspca_dev, 0xab,
841                                 sccb_reg_read(gspca_dev, 0xab) & ~0x2);
842 
843                 }
844                 sccb_reg_write(gspca_dev, 0xa9, (u8)huecos);
845                 sccb_reg_write(gspca_dev, 0xaa, (u8)huesin);
846         }
847 }
848 
849 static void setsaturation(struct gspca_dev *gspca_dev, s32 val)
850 {
851         struct sd *sd = (struct sd *) gspca_dev;
852 
853         if (sd->sensor == SENSOR_OV767x) {
854                 int i;
855                 static u8 color_tb[][6] = {
856                         {0x42, 0x42, 0x00, 0x11, 0x30, 0x41},
857                         {0x52, 0x52, 0x00, 0x16, 0x3c, 0x52},
858                         {0x66, 0x66, 0x00, 0x1b, 0x4b, 0x66},
859                         {0x80, 0x80, 0x00, 0x22, 0x5e, 0x80},
860                         {0x9a, 0x9a, 0x00, 0x29, 0x71, 0x9a},
861                         {0xb8, 0xb8, 0x00, 0x31, 0x87, 0xb8},
862                         {0xdd, 0xdd, 0x00, 0x3b, 0xa2, 0xdd},
863                 };
864 
865                 for (i = 0; i < ARRAY_SIZE(color_tb[0]); i++)
866                         sccb_reg_write(gspca_dev, 0x4f + i, color_tb[val][i]);
867         } else {
868                 sccb_reg_write(gspca_dev, 0xa7, val); /* U saturation */
869                 sccb_reg_write(gspca_dev, 0xa8, val); /* V saturation */
870         }
871 }
872 
873 static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
874 {
875         struct sd *sd = (struct sd *) gspca_dev;
876 
877         if (sd->sensor == SENSOR_OV767x) {
878                 if (val < 0)
879                         val = 0x80 - val;
880                 sccb_reg_write(gspca_dev, 0x55, val);   /* bright */
881         } else {
882                 sccb_reg_write(gspca_dev, 0x9b, val);
883         }
884 }
885 
886 static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
887 {
888         struct sd *sd = (struct sd *) gspca_dev;
889 
890         if (sd->sensor == SENSOR_OV767x)
891                 sccb_reg_write(gspca_dev, 0x56, val);   /* contras */
892         else
893                 sccb_reg_write(gspca_dev, 0x9c, val);
894 }
895 
896 static void setgain(struct gspca_dev *gspca_dev, s32 val)
897 {
898         switch (val & 0x30) {
899         case 0x00:
900                 val &= 0x0f;
901                 break;
902         case 0x10:
903                 val &= 0x0f;
904                 val |= 0x30;
905                 break;
906         case 0x20:
907                 val &= 0x0f;
908                 val |= 0x70;
909                 break;
910         default:
911 /*      case 0x30: */
912                 val &= 0x0f;
913                 val |= 0xf0;
914                 break;
915         }
916         sccb_reg_write(gspca_dev, 0x00, val);
917 }
918 
919 static s32 getgain(struct gspca_dev *gspca_dev)
920 {
921         return sccb_reg_read(gspca_dev, 0x00);
922 }
923 
924 static void setexposure(struct gspca_dev *gspca_dev, s32 val)
925 {
926         struct sd *sd = (struct sd *) gspca_dev;
927 
928         if (sd->sensor == SENSOR_OV767x) {
929 
930                 /* set only aec[9:2] */
931                 sccb_reg_write(gspca_dev, 0x10, val);   /* aech */
932         } else {
933 
934                 /* 'val' is one byte and represents half of the exposure value
935                  * we are going to set into registers, a two bytes value:
936                  *
937                  *    MSB: ((u16) val << 1) >> 8   == val >> 7
938                  *    LSB: ((u16) val << 1) & 0xff == val << 1
939                  */
940                 sccb_reg_write(gspca_dev, 0x08, val >> 7);
941                 sccb_reg_write(gspca_dev, 0x10, val << 1);
942         }
943 }
944 
945 static s32 getexposure(struct gspca_dev *gspca_dev)
946 {
947         struct sd *sd = (struct sd *) gspca_dev;
948 
949         if (sd->sensor == SENSOR_OV767x) {
950                 /* get only aec[9:2] */
951                 return sccb_reg_read(gspca_dev, 0x10);  /* aech */
952         } else {
953                 u8 hi = sccb_reg_read(gspca_dev, 0x08);
954                 u8 lo = sccb_reg_read(gspca_dev, 0x10);
955                 return (hi << 8 | lo) >> 1;
956         }
957 }
958 
959 static void setagc(struct gspca_dev *gspca_dev, s32 val)
960 {
961         if (val) {
962                 sccb_reg_write(gspca_dev, 0x13,
963                                 sccb_reg_read(gspca_dev, 0x13) | 0x04);
964                 sccb_reg_write(gspca_dev, 0x64,
965                                 sccb_reg_read(gspca_dev, 0x64) | 0x03);
966         } else {
967                 sccb_reg_write(gspca_dev, 0x13,
968                                 sccb_reg_read(gspca_dev, 0x13) & ~0x04);
969                 sccb_reg_write(gspca_dev, 0x64,
970                                 sccb_reg_read(gspca_dev, 0x64) & ~0x03);
971         }
972 }
973 
974 static void setawb(struct gspca_dev *gspca_dev, s32 val)
975 {
976         struct sd *sd = (struct sd *) gspca_dev;
977 
978         if (val) {
979                 sccb_reg_write(gspca_dev, 0x13,
980                                 sccb_reg_read(gspca_dev, 0x13) | 0x02);
981                 if (sd->sensor == SENSOR_OV772x)
982                         sccb_reg_write(gspca_dev, 0x63,
983                                 sccb_reg_read(gspca_dev, 0x63) | 0xc0);
984         } else {
985                 sccb_reg_write(gspca_dev, 0x13,
986                                 sccb_reg_read(gspca_dev, 0x13) & ~0x02);
987                 if (sd->sensor == SENSOR_OV772x)
988                         sccb_reg_write(gspca_dev, 0x63,
989                                 sccb_reg_read(gspca_dev, 0x63) & ~0xc0);
990         }
991 }
992 
993 static void setaec(struct gspca_dev *gspca_dev, s32 val)
994 {
995         struct sd *sd = (struct sd *) gspca_dev;
996         u8 data;
997 
998         data = sd->sensor == SENSOR_OV767x ?
999                         0x05 :          /* agc + aec */
1000                         0x01;           /* agc */
1001         switch (val) {
1002         case V4L2_EXPOSURE_AUTO:
1003                 sccb_reg_write(gspca_dev, 0x13,
1004                                 sccb_reg_read(gspca_dev, 0x13) | data);
1005                 break;
1006         case V4L2_EXPOSURE_MANUAL:
1007                 sccb_reg_write(gspca_dev, 0x13,
1008                                 sccb_reg_read(gspca_dev, 0x13) & ~data);
1009                 break;
1010         }
1011 }
1012 
1013 static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
1014 {
1015         sccb_reg_write(gspca_dev, 0x91, val);   /* Auto de-noise threshold */
1016         sccb_reg_write(gspca_dev, 0x8e, val);   /* De-noise threshold */
1017 }
1018 
1019 static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
1020 {
1021         struct sd *sd = (struct sd *) gspca_dev;
1022         u8 val;
1023 
1024         if (sd->sensor == SENSOR_OV767x) {
1025                 val = sccb_reg_read(gspca_dev, 0x1e);   /* mvfp */
1026                 val &= ~0x30;
1027                 if (hflip)
1028                         val |= 0x20;
1029                 if (vflip)
1030                         val |= 0x10;
1031                 sccb_reg_write(gspca_dev, 0x1e, val);
1032         } else {
1033                 val = sccb_reg_read(gspca_dev, 0x0c);
1034                 val &= ~0xc0;
1035                 if (hflip == 0)
1036                         val |= 0x40;
1037                 if (vflip == 0)
1038                         val |= 0x80;
1039                 sccb_reg_write(gspca_dev, 0x0c, val);
1040         }
1041 }
1042 
1043 static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
1044 {
1045         struct sd *sd = (struct sd *) gspca_dev;
1046 
1047         val = val ? 0x9e : 0x00;
1048         if (sd->sensor == SENSOR_OV767x) {
1049                 sccb_reg_write(gspca_dev, 0x2a, 0x00);
1050                 if (val)
1051                         val = 0x9d;     /* insert dummy to 25fps for 50Hz */
1052         }
1053         sccb_reg_write(gspca_dev, 0x2b, val);
1054 }
1055 
1056 
1057 /* this function is called at probe time */
1058 static int sd_config(struct gspca_dev *gspca_dev,
1059                      const struct usb_device_id *id)
1060 {
1061         struct sd *sd = (struct sd *) gspca_dev;
1062         struct cam *cam;
1063 
1064         cam = &gspca_dev->cam;
1065 
1066         cam->cam_mode = ov772x_mode;
1067         cam->nmodes = ARRAY_SIZE(ov772x_mode);
1068 
1069         sd->frame_rate = 30;
1070 
1071         return 0;
1072 }
1073 
1074 static int ov534_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1075 {
1076         struct sd *sd = container_of(ctrl->handler, struct sd, ctrl_handler);
1077         struct gspca_dev *gspca_dev = &sd->gspca_dev;
1078 
1079         switch (ctrl->id) {
1080         case V4L2_CID_AUTOGAIN:
1081                 gspca_dev->usb_err = 0;
1082                 if (ctrl->val && sd->gain && gspca_dev->streaming)
1083                         sd->gain->val = getgain(gspca_dev);
1084                 return gspca_dev->usb_err;
1085 
1086         case V4L2_CID_EXPOSURE_AUTO:
1087                 gspca_dev->usb_err = 0;
1088                 if (ctrl->val == V4L2_EXPOSURE_AUTO && sd->exposure &&
1089                     gspca_dev->streaming)
1090                         sd->exposure->val = getexposure(gspca_dev);
1091                 return gspca_dev->usb_err;
1092         }
1093         return -EINVAL;
1094 }
1095 
1096 static int ov534_s_ctrl(struct v4l2_ctrl *ctrl)
1097 {
1098         struct sd *sd = container_of(ctrl->handler, struct sd, ctrl_handler);
1099         struct gspca_dev *gspca_dev = &sd->gspca_dev;
1100 
1101         gspca_dev->usb_err = 0;
1102         if (!gspca_dev->streaming)
1103                 return 0;
1104 
1105         switch (ctrl->id) {
1106         case V4L2_CID_HUE:
1107                 sethue(gspca_dev, ctrl->val);
1108                 break;
1109         case V4L2_CID_SATURATION:
1110                 setsaturation(gspca_dev, ctrl->val);
1111                 break;
1112         case V4L2_CID_BRIGHTNESS:
1113                 setbrightness(gspca_dev, ctrl->val);
1114                 break;
1115         case V4L2_CID_CONTRAST:
1116                 setcontrast(gspca_dev, ctrl->val);
1117                 break;
1118         case V4L2_CID_AUTOGAIN:
1119         /* case V4L2_CID_GAIN: */
1120                 setagc(gspca_dev, ctrl->val);
1121                 if (!gspca_dev->usb_err && !ctrl->val && sd->gain)
1122                         setgain(gspca_dev, sd->gain->val);
1123                 break;
1124         case V4L2_CID_AUTO_WHITE_BALANCE:
1125                 setawb(gspca_dev, ctrl->val);
1126                 break;
1127         case V4L2_CID_EXPOSURE_AUTO:
1128         /* case V4L2_CID_EXPOSURE: */
1129                 setaec(gspca_dev, ctrl->val);
1130                 if (!gspca_dev->usb_err && ctrl->val == V4L2_EXPOSURE_MANUAL &&
1131                     sd->exposure)
1132                         setexposure(gspca_dev, sd->exposure->val);
1133                 break;
1134         case V4L2_CID_SHARPNESS:
1135                 setsharpness(gspca_dev, ctrl->val);
1136                 break;
1137         case V4L2_CID_HFLIP:
1138                 sethvflip(gspca_dev, ctrl->val, sd->vflip->val);
1139                 break;
1140         case V4L2_CID_VFLIP:
1141                 sethvflip(gspca_dev, sd->hflip->val, ctrl->val);
1142                 break;
1143         case V4L2_CID_POWER_LINE_FREQUENCY:
1144                 setlightfreq(gspca_dev, ctrl->val);
1145                 break;
1146         }
1147         return gspca_dev->usb_err;
1148 }
1149 
1150 static const struct v4l2_ctrl_ops ov534_ctrl_ops = {
1151         .g_volatile_ctrl = ov534_g_volatile_ctrl,
1152         .s_ctrl = ov534_s_ctrl,
1153 };
1154 
1155 static int sd_init_controls(struct gspca_dev *gspca_dev)
1156 {
1157         struct sd *sd = (struct sd *) gspca_dev;
1158         struct v4l2_ctrl_handler *hdl = &sd->ctrl_handler;
1159         /* parameters with different values between the supported sensors */
1160         int saturation_min;
1161         int saturation_max;
1162         int saturation_def;
1163         int brightness_min;
1164         int brightness_max;
1165         int brightness_def;
1166         int contrast_max;
1167         int contrast_def;
1168         int exposure_min;
1169         int exposure_max;
1170         int exposure_def;
1171         int hflip_def;
1172 
1173         if (sd->sensor == SENSOR_OV767x) {
1174                 saturation_min = 0,
1175                 saturation_max = 6,
1176                 saturation_def = 3,
1177                 brightness_min = -127;
1178                 brightness_max = 127;
1179                 brightness_def = 0;
1180                 contrast_max = 0x80;
1181                 contrast_def = 0x40;
1182                 exposure_min = 0x08;
1183                 exposure_max = 0x60;
1184                 exposure_def = 0x13;
1185                 hflip_def = 1;
1186         } else {
1187                 saturation_min = 0,
1188                 saturation_max = 255,
1189                 saturation_def = 64,
1190                 brightness_min = 0;
1191                 brightness_max = 255;
1192                 brightness_def = 0;
1193                 contrast_max = 255;
1194                 contrast_def = 32;
1195                 exposure_min = 0;
1196                 exposure_max = 255;
1197                 exposure_def = 120;
1198                 hflip_def = 0;
1199         }
1200 
1201         gspca_dev->vdev.ctrl_handler = hdl;
1202 
1203         v4l2_ctrl_handler_init(hdl, 13);
1204 
1205         if (sd->sensor == SENSOR_OV772x)
1206                 sd->hue = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1207                                 V4L2_CID_HUE, -90, 90, 1, 0);
1208 
1209         sd->saturation = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1210                         V4L2_CID_SATURATION, saturation_min, saturation_max, 1,
1211                         saturation_def);
1212         sd->brightness = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1213                         V4L2_CID_BRIGHTNESS, brightness_min, brightness_max, 1,
1214                         brightness_def);
1215         sd->contrast = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1216                         V4L2_CID_CONTRAST, 0, contrast_max, 1, contrast_def);
1217 
1218         if (sd->sensor == SENSOR_OV772x) {
1219                 sd->autogain = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1220                                 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1221                 sd->gain = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1222                                 V4L2_CID_GAIN, 0, 63, 1, 20);
1223         }
1224 
1225         sd->autoexposure = v4l2_ctrl_new_std_menu(hdl, &ov534_ctrl_ops,
1226                         V4L2_CID_EXPOSURE_AUTO,
1227                         V4L2_EXPOSURE_MANUAL, 0,
1228                         V4L2_EXPOSURE_AUTO);
1229         sd->exposure = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1230                         V4L2_CID_EXPOSURE, exposure_min, exposure_max, 1,
1231                         exposure_def);
1232 
1233         sd->autowhitebalance = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1234                         V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
1235 
1236         if (sd->sensor == SENSOR_OV772x)
1237                 sd->sharpness = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1238                                 V4L2_CID_SHARPNESS, 0, 63, 1, 0);
1239 
1240         sd->hflip = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1241                         V4L2_CID_HFLIP, 0, 1, 1, hflip_def);
1242         sd->vflip = v4l2_ctrl_new_std(hdl, &ov534_ctrl_ops,
1243                         V4L2_CID_VFLIP, 0, 1, 1, 0);
1244         sd->plfreq = v4l2_ctrl_new_std_menu(hdl, &ov534_ctrl_ops,
1245                         V4L2_CID_POWER_LINE_FREQUENCY,
1246                         V4L2_CID_POWER_LINE_FREQUENCY_50HZ, 0,
1247                         V4L2_CID_POWER_LINE_FREQUENCY_DISABLED);
1248 
1249         if (hdl->error) {
1250                 pr_err("Could not initialize controls\n");
1251                 return hdl->error;
1252         }
1253 
1254         if (sd->sensor == SENSOR_OV772x)
1255                 v4l2_ctrl_auto_cluster(2, &sd->autogain, 0, true);
1256 
1257         v4l2_ctrl_auto_cluster(2, &sd->autoexposure, V4L2_EXPOSURE_MANUAL,
1258                                true);
1259 
1260         return 0;
1261 }
1262 
1263 /* this function is called at probe and resume time */
1264 static int sd_init(struct gspca_dev *gspca_dev)
1265 {
1266         struct sd *sd = (struct sd *) gspca_dev;
1267         u16 sensor_id;
1268         static const struct reg_array bridge_init[NSENSORS] = {
1269         [SENSOR_OV767x] = {bridge_init_767x, ARRAY_SIZE(bridge_init_767x)},
1270         [SENSOR_OV772x] = {bridge_init_772x, ARRAY_SIZE(bridge_init_772x)},
1271         };
1272         static const struct reg_array sensor_init[NSENSORS] = {
1273         [SENSOR_OV767x] = {sensor_init_767x, ARRAY_SIZE(sensor_init_767x)},
1274         [SENSOR_OV772x] = {sensor_init_772x, ARRAY_SIZE(sensor_init_772x)},
1275         };
1276 
1277         /* reset bridge */
1278         ov534_reg_write(gspca_dev, 0xe7, 0x3a);
1279         ov534_reg_write(gspca_dev, 0xe0, 0x08);
1280         msleep(100);
1281 
1282         /* initialize the sensor address */
1283         ov534_reg_write(gspca_dev, OV534_REG_ADDRESS, 0x42);
1284 
1285         /* reset sensor */
1286         sccb_reg_write(gspca_dev, 0x12, 0x80);
1287         msleep(10);
1288 
1289         /* probe the sensor */
1290         sccb_reg_read(gspca_dev, 0x0a);
1291         sensor_id = sccb_reg_read(gspca_dev, 0x0a) << 8;
1292         sccb_reg_read(gspca_dev, 0x0b);
1293         sensor_id |= sccb_reg_read(gspca_dev, 0x0b);
1294         PDEBUG(D_PROBE, "Sensor ID: %04x", sensor_id);
1295 
1296         if ((sensor_id & 0xfff0) == 0x7670) {
1297                 sd->sensor = SENSOR_OV767x;
1298                 gspca_dev->cam.cam_mode = ov767x_mode;
1299                 gspca_dev->cam.nmodes = ARRAY_SIZE(ov767x_mode);
1300         } else {
1301                 sd->sensor = SENSOR_OV772x;
1302                 gspca_dev->cam.bulk = 1;
1303                 gspca_dev->cam.bulk_size = 16384;
1304                 gspca_dev->cam.bulk_nurbs = 2;
1305                 gspca_dev->cam.mode_framerates = ov772x_framerates;
1306         }
1307 
1308         /* initialize */
1309         reg_w_array(gspca_dev, bridge_init[sd->sensor].val,
1310                         bridge_init[sd->sensor].len);
1311         ov534_set_led(gspca_dev, 1);
1312         sccb_w_array(gspca_dev, sensor_init[sd->sensor].val,
1313                         sensor_init[sd->sensor].len);
1314 
1315         sd_stopN(gspca_dev);
1316 /*      set_frame_rate(gspca_dev);      */
1317 
1318         return gspca_dev->usb_err;
1319 }
1320 
1321 static int sd_start(struct gspca_dev *gspca_dev)
1322 {
1323         struct sd *sd = (struct sd *) gspca_dev;
1324         int mode;
1325         static const struct reg_array bridge_start[NSENSORS][2] = {
1326         [SENSOR_OV767x] = {{bridge_start_qvga_767x,
1327                                         ARRAY_SIZE(bridge_start_qvga_767x)},
1328                         {bridge_start_vga_767x,
1329                                         ARRAY_SIZE(bridge_start_vga_767x)}},
1330         [SENSOR_OV772x] = {{bridge_start_qvga_772x,
1331                                         ARRAY_SIZE(bridge_start_qvga_772x)},
1332                         {bridge_start_vga_772x,
1333                                         ARRAY_SIZE(bridge_start_vga_772x)}},
1334         };
1335         static const struct reg_array sensor_start[NSENSORS][2] = {
1336         [SENSOR_OV767x] = {{sensor_start_qvga_767x,
1337                                         ARRAY_SIZE(sensor_start_qvga_767x)},
1338                         {sensor_start_vga_767x,
1339                                         ARRAY_SIZE(sensor_start_vga_767x)}},
1340         [SENSOR_OV772x] = {{sensor_start_qvga_772x,
1341                                         ARRAY_SIZE(sensor_start_qvga_772x)},
1342                         {sensor_start_vga_772x,
1343                                         ARRAY_SIZE(sensor_start_vga_772x)}},
1344         };
1345 
1346         /* (from ms-win trace) */
1347         if (sd->sensor == SENSOR_OV767x)
1348                 sccb_reg_write(gspca_dev, 0x1e, 0x04);
1349                                         /* black sun enable ? */
1350 
1351         mode = gspca_dev->curr_mode;    /* 0: 320x240, 1: 640x480 */
1352         reg_w_array(gspca_dev, bridge_start[sd->sensor][mode].val,
1353                                 bridge_start[sd->sensor][mode].len);
1354         sccb_w_array(gspca_dev, sensor_start[sd->sensor][mode].val,
1355                                 sensor_start[sd->sensor][mode].len);
1356 
1357         set_frame_rate(gspca_dev);
1358 
1359         if (sd->hue)
1360                 sethue(gspca_dev, v4l2_ctrl_g_ctrl(sd->hue));
1361         setsaturation(gspca_dev, v4l2_ctrl_g_ctrl(sd->saturation));
1362         if (sd->autogain)
1363                 setagc(gspca_dev, v4l2_ctrl_g_ctrl(sd->autogain));
1364         setawb(gspca_dev, v4l2_ctrl_g_ctrl(sd->autowhitebalance));
1365         setaec(gspca_dev, v4l2_ctrl_g_ctrl(sd->autoexposure));
1366         if (sd->gain)
1367                 setgain(gspca_dev, v4l2_ctrl_g_ctrl(sd->gain));
1368         setexposure(gspca_dev, v4l2_ctrl_g_ctrl(sd->exposure));
1369         setbrightness(gspca_dev, v4l2_ctrl_g_ctrl(sd->brightness));
1370         setcontrast(gspca_dev, v4l2_ctrl_g_ctrl(sd->contrast));
1371         if (sd->sharpness)
1372                 setsharpness(gspca_dev, v4l2_ctrl_g_ctrl(sd->sharpness));
1373         sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip),
1374                   v4l2_ctrl_g_ctrl(sd->vflip));
1375         setlightfreq(gspca_dev, v4l2_ctrl_g_ctrl(sd->plfreq));
1376 
1377         ov534_set_led(gspca_dev, 1);
1378         ov534_reg_write(gspca_dev, 0xe0, 0x00);
1379         return gspca_dev->usb_err;
1380 }
1381 
1382 static void sd_stopN(struct gspca_dev *gspca_dev)
1383 {
1384         ov534_reg_write(gspca_dev, 0xe0, 0x09);
1385         ov534_set_led(gspca_dev, 0);
1386 }
1387 
1388 /* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
1389 #define UVC_STREAM_EOH  (1 << 7)
1390 #define UVC_STREAM_ERR  (1 << 6)
1391 #define UVC_STREAM_STI  (1 << 5)
1392 #define UVC_STREAM_RES  (1 << 4)
1393 #define UVC_STREAM_SCR  (1 << 3)
1394 #define UVC_STREAM_PTS  (1 << 2)
1395 #define UVC_STREAM_EOF  (1 << 1)
1396 #define UVC_STREAM_FID  (1 << 0)
1397 
1398 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
1399                         u8 *data, int len)
1400 {
1401         struct sd *sd = (struct sd *) gspca_dev;
1402         __u32 this_pts;
1403         u16 this_fid;
1404         int remaining_len = len;
1405         int payload_len;
1406 
1407         payload_len = gspca_dev->cam.bulk ? 2048 : 2040;
1408         do {
1409                 len = min(remaining_len, payload_len);
1410 
1411                 /* Payloads are prefixed with a UVC-style header.  We
1412                    consider a frame to start when the FID toggles, or the PTS
1413                    changes.  A frame ends when EOF is set, and we've received
1414                    the correct number of bytes. */
1415 
1416                 /* Verify UVC header.  Header length is always 12 */
1417                 if (data[0] != 12 || len < 12) {
1418                         PDEBUG(D_PACK, "bad header");
1419                         goto discard;
1420                 }
1421 
1422                 /* Check errors */
1423                 if (data[1] & UVC_STREAM_ERR) {
1424                         PDEBUG(D_PACK, "payload error");
1425                         goto discard;
1426                 }
1427 
1428                 /* Extract PTS and FID */
1429                 if (!(data[1] & UVC_STREAM_PTS)) {
1430                         PDEBUG(D_PACK, "PTS not present");
1431                         goto discard;
1432                 }
1433                 this_pts = (data[5] << 24) | (data[4] << 16)
1434                                                 | (data[3] << 8) | data[2];
1435                 this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
1436 
1437                 /* If PTS or FID has changed, start a new frame. */
1438                 if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
1439                         if (gspca_dev->last_packet_type == INTER_PACKET)
1440                                 gspca_frame_add(gspca_dev, LAST_PACKET,
1441                                                 NULL, 0);
1442                         sd->last_pts = this_pts;
1443                         sd->last_fid = this_fid;
1444                         gspca_frame_add(gspca_dev, FIRST_PACKET,
1445                                         data + 12, len - 12);
1446                 /* If this packet is marked as EOF, end the frame */
1447                 } else if (data[1] & UVC_STREAM_EOF) {
1448                         sd->last_pts = 0;
1449                         if (gspca_dev->pixfmt.pixelformat == V4L2_PIX_FMT_YUYV
1450                          && gspca_dev->image_len + len - 12 !=
1451                                    gspca_dev->pixfmt.width *
1452                                         gspca_dev->pixfmt.height * 2) {
1453                                 PDEBUG(D_PACK, "wrong sized frame");
1454                                 goto discard;
1455                         }
1456                         gspca_frame_add(gspca_dev, LAST_PACKET,
1457                                         data + 12, len - 12);
1458                 } else {
1459 
1460                         /* Add the data from this payload */
1461                         gspca_frame_add(gspca_dev, INTER_PACKET,
1462                                         data + 12, len - 12);
1463                 }
1464 
1465                 /* Done this payload */
1466                 goto scan_next;
1467 
1468 discard:
1469                 /* Discard data until a new frame starts. */
1470                 gspca_dev->last_packet_type = DISCARD_PACKET;
1471 
1472 scan_next:
1473                 remaining_len -= len;
1474                 data += len;
1475         } while (remaining_len > 0);
1476 }
1477 
1478 /* get stream parameters (framerate) */
1479 static void sd_get_streamparm(struct gspca_dev *gspca_dev,
1480                              struct v4l2_streamparm *parm)
1481 {
1482         struct v4l2_captureparm *cp = &parm->parm.capture;
1483         struct v4l2_fract *tpf = &cp->timeperframe;
1484         struct sd *sd = (struct sd *) gspca_dev;
1485 
1486         cp->capability |= V4L2_CAP_TIMEPERFRAME;
1487         tpf->numerator = 1;
1488         tpf->denominator = sd->frame_rate;
1489 }
1490 
1491 /* set stream parameters (framerate) */
1492 static void sd_set_streamparm(struct gspca_dev *gspca_dev,
1493                              struct v4l2_streamparm *parm)
1494 {
1495         struct v4l2_captureparm *cp = &parm->parm.capture;
1496         struct v4l2_fract *tpf = &cp->timeperframe;
1497         struct sd *sd = (struct sd *) gspca_dev;
1498 
1499         /* Set requested framerate */
1500         sd->frame_rate = tpf->denominator / tpf->numerator;
1501         if (gspca_dev->streaming)
1502                 set_frame_rate(gspca_dev);
1503 
1504         /* Return the actual framerate */
1505         tpf->numerator = 1;
1506         tpf->denominator = sd->frame_rate;
1507 }
1508 
1509 /* sub-driver description */
1510 static const struct sd_desc sd_desc = {
1511         .name     = MODULE_NAME,
1512         .config   = sd_config,
1513         .init     = sd_init,
1514         .init_controls = sd_init_controls,
1515         .start    = sd_start,
1516         .stopN    = sd_stopN,
1517         .pkt_scan = sd_pkt_scan,
1518         .get_streamparm = sd_get_streamparm,
1519         .set_streamparm = sd_set_streamparm,
1520 };
1521 
1522 /* -- module initialisation -- */
1523 static const struct usb_device_id device_table[] = {
1524         {USB_DEVICE(0x1415, 0x2000)},
1525         {USB_DEVICE(0x06f8, 0x3002)},
1526         {}
1527 };
1528 
1529 MODULE_DEVICE_TABLE(usb, device_table);
1530 
1531 /* -- device connect -- */
1532 static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
1533 {
1534         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
1535                                 THIS_MODULE);
1536 }
1537 
1538 static struct usb_driver sd_driver = {
1539         .name       = MODULE_NAME,
1540         .id_table   = device_table,
1541         .probe      = sd_probe,
1542         .disconnect = gspca_disconnect,
1543 #ifdef CONFIG_PM
1544         .suspend    = gspca_suspend,
1545         .resume     = gspca_resume,
1546         .reset_resume = gspca_resume,
1547 #endif
1548 };
1549 
1550 module_usb_driver(sd_driver);
1551 

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